[server] Add resource-based KV leader replica capacity control#3614
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swuferhong wants to merge 2 commits into
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[server] Add resource-based KV leader replica capacity control#3614swuferhong wants to merge 2 commits into
swuferhong wants to merge 2 commits into
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beryllw
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Purpose
Linked issue: close #3613
Add
tabletServerresource reporting and a coordinator-sideKvLeaderReplicaCapacityManagerto protect clusters from creating too many KV leader replicas.TabletServersnow report optional CPU and memory information during registration. The coordinator deriveskvLeaderReplicaCapacityfrom livetabletServermemory andkv.leader-replica.memory-reserved, tracks the current KV leader replica count in memory, rebuilds it on coordinator leadership startup, and checks/reserves capacity when creating KV tables or partitions.The capacity limit is disabled unless more than half of live tablet servers report memory. Unknown-memory
TabletServersuse the average known memory when the limit is enabled.Also add dynamic config support, metrics, RPC error mapping, serde compatibility, auto-partition accounting, and tests for resource probing, capacity calculation, manual create/drop, and auto partition create/drop.
Brief change log
Tests
API and Format
Documentation